io.imread and Qpixmap

[Kurtan]

I'm trying to load and image,then convert it to grayscale format.I did some code but I got the error message when loading an image with using io.imread.What should I change to fix error ?

 def loadImage(self):
        
        self.filename = QFileDialog.getOpenFileName(filter="Image (*.*)")[0]
        self.image = io.imread(self.filename)
        self.setPhoto(self.image)
    
    def setPhoto(self,image):
        
        self.tmp = image
        
        
        self.label.setPixmap(QPixmap(image))

and error is that

runfile('C:/Users/user/Desktop/pyqt5/open2Gray.py', wdir='C:/Users/user/Desktop/pyqt5')
Traceback (most recent call last):

  File "C:\Users\user\Desktop\pyqt5\open2Gray.py", line 62, in loadImage
    self.setPhoto(self.image)

  File "C:\Users\user\Desktop\pyqt5\open2Gray.py", line 69, in setPhoto
    self.label.setPixmap(QPixmap(image))

TypeError: QPixmap(): argument 1 has unexpected type 'numpy.ndarray'

[JonB]

@Kurtan said in io.imread and Qpixmap:

self.image = io.imread(self.filename)

What is io.imread()? Some Python numpy thing, a numpy.ndarray? Why do you read an image file in with io.imread() to produce a numpy.ndarray if you want to pass it to Qt's QPixmap() which knows nothing about numpy.ndarray? E.g. QPixmap(self.filename) returns a QPixmap from the file content without going anywhere near numpy.ndarray....

If you really have to a have a io.imread()/numpy.ndarray for some reason then I suggest you Google for pyqt5 numpy image or pysize numpy image or pyqt5 numpy array to qpixmap and pick one of the many hits for code to do the conversion.